403643263 has 2 divisors, whose sum is σ = 403643264. Its totient is φ = 403643262.

The previous prime is 403643221. The next prime is 403643341. The reversal of 403643263 is 362346304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 403643263 - 2⁹ = 403642751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403643203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201821631 + 201821632.

It is an arithmetic number, because the mean of its divisors is an integer number (201821632).

Almost surely, 2^403643263 is an apocalyptic number.

403643263 is a deficient number, since it is larger than the sum of its proper divisors (1).

403643263 is an equidigital number, since it uses as much as digits as its factorization.

403643263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 31.

The square root of 403643263 is about 20090.8751178240. The cubic root of 403643263 is about 739.0365248985.

Adding to 403643263 its reverse (362346304), we get a palindrome (765989567).

The spelling of 403643263 in words is "four hundred three million, six hundred forty-three thousand, two hundred sixty-three".